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MS 4 - Storm Water

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When we build or introduce new surfaces to an existing landscape, it’s important to consider the natural flow of water in that area may be disrupted.  Adding impervious surfaces like roofs and residential driveways increase the amount of stormwater runoff, which collects particles of oil, dust, and other pollutants as it travels over the surface of the ground.

This results in an excess of stormwater runoff, which let untreated will travel through drains and gutters until finally depositing into lakes, streams, and the ocean. Negative consequences of this include the following:

  • Pollutants are carried into the oceans and out waterways where they can affect wildlife and water quality
  • Debris carried in stormwater can clog out storm drains and cause residential flooding
  • Increased volumes of stormwater can erode streambanks and hillsides

To avoid these adverse impacts to our property and the environment, federal, state and local laws and regulations require that stormwater be managed by residential and commercial property owners.

For more information go to www.stormwaterpa.org/cumberland-county.html

Below is a link to a FREE Facebook game, Stormwater Sentries, that promotes awareness of the environmental impact of stormwater runoff on your community. The Alliance for the Chesapeake Bay developed this game to promote awareness of the environmental impact that the daily decisions we make on our own private property can have on local stream health. Enjoy playing this interactive game with your family and learn how to make better environmental decisions to improve water quality in nearby streams, rivers, and ultimately the Chesapeake Bay!


      Source: Alliance for the Chesapeake Bay. www.stormwater.allianceforthebay.org

The federal Clean Water Act (CWA) prohibits the discharge of pollutants into waterways without the appropriate permits. Pennsylvania’s Stormwater Management Act (better known as Act 167), MS4 Program, Chapter 102 (Erosion and Sediment Control Requirements), and NPDES Permit Program for Stormwater Discharges Associated with Construction Activities are amongst the Commonwealth’s methods for meeting the runoff-related requirements of the Clean Water Act.

For all practical purposes, though, implementation of stormwater management efforts in Pennsylvania occurs at the community level because individual municipalities are ultimately responsible for adopting zoning ordinances, subdivision and land development regulations, and other programs that keep their locality’s runoff under control.

Contrary to the common perception, properly planning for stormwater can accomplish this goal while speeding the permitting process, saving on construction costs, and resulting in profitable projects that enhance a community in multiple ways.

– Pennsylvania’s Storm Water Management Act (Act 167) – Pennsylvania Department of Environmental Protection Fact Sheet on storm water runoff

– StormwaterPA MS4 Website – StormwaterPA Website  –  Resource Page for Cumberland County

– United States Environmental Protection Agency – EPA – Water: Permitting (NPDES) – Pollution Prevention & Control – EPA Website

– Penn State College of Agricultural Science – Resource Page

– Homeowner’s Guide to Stormwater – Start your own plan here

– Cumberland County Recycling and Waster Disposal – Main Page

– Lower Allen Township – 2013-2014 Annual Report

– Lower Allen Township – 2013-2014 Annual Municipal Activity Report

– Lower Allen Township – 2014-2015 Annual Municipal Activity Report

-Lower Allen Township – 2015-2016 Annual Municipal Activity Report 

-Lower Allen Township – 2016-2017 Annual Municipal Activity Report 


Appendix 1 Notice Comments Repsonse

Appendix 2 Cover SheetBMP Location MapExisting Land Use Map Storm Sewer Shed Map

Appendix 3 Base Load Credits Permitted Properties Map

Appendix 4 Reduction Load Computations 

Final PRP

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